example.c

# include <uv.h>
# include <stdio.h>

static int count = 0;

void close_cb(uv_handle_t* handle)
{
    // free(handle);
}

void timer_cb(uv_timer_t* timer, int status)
{
    puts("1");
    if (count >= 10) {
        uv_unref(uv_default_loop());
        // uv_timer_stop(timer);
        uv_close((uv_handle_t*)timer, close_cb);
    }
    count++;
}

int main(int argc, char* argv[])
{
    uv_timer_t timer;

    uv_timer_init(uv_default_loop(), &timer);
    uv_timer_start(&timer, timer_cb, 1, 1);
    uv_run(uv_default_loop());
    uv_loop_delete(uv_default_loop());
}

gistfile1.sh

Bulat-Shakirzyanovs-MacBook-Air:examples bulatshakirzyanov$ valgrind ./example
==3028== Memcheck, a memory error detector
==3028== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==3028== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==3028== Command: ./example
==3028== 
--3028-- ./example:
--3028-- dSYM directory is missing; consider using --dsymutil=yes
1
1
1
1
1
1
1
1
1
1
1
==3028== 
==3028== Process terminating with default action of signal 6 (SIGABRT)
==3028==    at 0x170E82A: __kill (in /usr/lib/system/libsystem_kernel.dylib)
==3028==    by 0x23179: ev_unref (in /usr/local/Cellar/libuv/HEAD/lib/uv.1.dylib)
==3028==    by 0x227C2: ev_invoke_pending (in /usr/local/Cellar/libuv/HEAD/lib/uv.1.dylib)
==3028==    by 0x266FB: ev_run (in /usr/local/Cellar/libuv/HEAD/lib/uv.1.dylib)
==3028==    by 0x19CB7: uv_run (in /usr/local/Cellar/libuv/HEAD/lib/uv.1.dylib)
==3028==    by 0x100000C11: main (in ./example)
==3028== 
==3028== HEAP SUMMARY:
==3028==     in use at exit: 234,278 bytes in 990 blocks
==3028==   total heap usage: 1,523 allocs, 533 frees, 311,966 bytes allocated
==3028== 
==3028== LEAK SUMMARY:
==3028==    definitely lost: 0 bytes in 0 blocks
==3028==    indirectly lost: 0 bytes in 0 blocks
==3028==      possibly lost: 0 bytes in 0 blocks
==3028==    still reachable: 234,278 bytes in 990 blocks
==3028==         suppressed: 0 bytes in 0 blocks
==3028== Rerun with --leak-check=full to see details of leaked memory
==3028== 
==3028== For counts of detected and suppressed errors, rerun with: -v
==3028== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 116 from 8)
Abort trap: 6